Malicious PDF — malware analysis report

Static analysis result for SHA-256 04a89fa9e9f36ffe…

MALICIOUS

PDF

43.7 KB Created: 2021-05-10 22:15:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8a44da123f1f219c2cc28f02a14054e8 SHA-1: ab9974429a68f84c731cc5c2f18910dba8bbfaab SHA-256: 04a89fa9e9f36ffebd9dd1383b5aefd624bfde7d280509d0e8cccf83daef8ecd
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, many of which are disguised as game hacks or generators for popular games like Coin Master and Roblox. The presence of a fake CAPTCHA heuristic suggests an attempt to trick the user into performing an action, likely to download a payload or visit a malicious site. While no scripts were directly extracted, the embedded URLs are the primary indicators of malicious intent, likely leading to further malware delivery or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/coin-master-hack-game-download-ios-game-hack PDF link annotation
    • http://behsanroshd.com/images/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/earn-robux-websites_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47D2 23980 bytes
SHA-256: b1a2fb46050475e65560f09430509f367ea49d1d6c2ba66a9994da88fa317e24
font_01_sfnt_off00007da6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA6 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8758 18556 bytes
SHA-256: bbb16adb579c26ea7dee9b6864ebd489bd68511943ce27e2a97e1917f0909ab0

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